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Advancing the under...
Advancing the understanding of reverse breakdown in Cu(In,Ga)Se2 solar cells
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- Szaniawski, Piotr (författare)
- Uppsala universitet,Fasta tillståndets elektronik
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- Zabierowski, Pawel (författare)
- Warsaw Univ Technol, Fac Phys, PL-00662 Warsaw, Poland
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- Olsson, Jörgen, 1966- (författare)
- Uppsala universitet,Fasta tillståndets elektronik
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- Zimmermann, Uwe, 1970- (författare)
- Uppsala universitet,Fasta tillståndets elektronik
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- Edoff, Marika, 1965- (författare)
- Uppsala universitet,Fasta tillståndets elektronik
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(creator_code:org_t)
- 2017
- 2017
- Engelska.
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Ingår i: IEEE Journal of Photovoltaics. - 2156-3381 .- 2156-3403. ; 7:4, s. 1136-1142
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
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- Reverse breakdown is investigated in multiple Cu(In,Ga)Se-2 solar cells with varying buffer layer thicknesses. A method to extract transition voltage, which marks the change of conduction mechanism that leads to electrical breakdown, is described as an alternative to the often less-meaningful breakdown voltage. Transition voltages for samples with CdS and ZnxSn1-xOy buffers are extracted from breakdown measurements performed in darkness and under illumination. The electric field is calculated for ZTO-based samples measured in darkness, and its implications for the energy band structure are examined. Fowler-Nordheim tunneling and Poole-Frenkel conduction are considered as candidates for the main breakdown mechanism in darkness. A model combining the two conduction mechanisms is proposed, and fits for experimental data are presented and discussed. Involvement of defects is debated, and defect-andbreakdown- related phenomena are showcased.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Annan elektroteknik och elektronik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Other Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)
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- ref (ämneskategori)
- art (ämneskategori)
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